<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>ref的用法1-标签上加ref</title>
</head>

<body>
    <div id="root">
        <div 
            ref="hello" 
            @click="handleClick"
        >
            hello world
        </div>
    </div>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <script>
        var vm = new Vue({
            el: "#root",
            methods:{
                handleClick:function(){
                    alert(this.$refs.hello.innerHTML);
                }
            }
        })
    </script>
</body>

</html>